The Mayan Calendar

In December 2012 a great cycle in the Mayan calendar came to an end … and nothing happened. Why was the Mayan calendar such a big deal? Why do some people claim it was an extremely ‘accurate’ calendar? And where does its big connection with the number 13 come from?

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The Modern Calendar

This describes how the modern calendar developed from the old Roman Republican calendar via Julius Caesar’s reforms and later those of Pope Gregory XIII. In the process we find out about the Ancient Egyptian calendar, why Julius Caesar and Pope Gregory made their reforms, how Christians calculated the date of Easter, and why the Eastern Orthodox Church now has different dates of Easter and Christmas.

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